Tool arbor



FIG. 1 is a perspective view of a tool arbor embodying the invention.

FIG. 2 is a right side view of the tool arbor shown in FIG. 1, the leftside view, top view and bottom view being substantially the same as theright side view.

FIG. 3 is a front view of the tool arbor shown in FIG. 1; and,

FIG. 4 is a rear view of the tool arbor shown in FIG. 1.

The portions of the tool arbor shown in broken lines are forillustrative purposes only and form no part of the claimed design. Theportions of the tool arbor shown in broken lines having unequal lengthsegments illustrate the boundary of the claimed design and form no partof the claimed design.

The ornamental design for a tool arbor, as shown and described.